1. The elements that are most abundant in living organisms are <span>oxygen, nitrogen, carbon, hydrogen, sulfur, and phosphorus. The answer to your question is D.
2. </span>Carbon is so abundant in living things when oxygen is the most abundant element on Earth because carbon atoms can bond with one another to make chains and cyclic structures whereas oxygen atoms cannot form chains or cyclic structures. <span>The answer to your question is A.
3. </span>A protein is different from a complex carbohydrate because the monomers that make up a protein vary whereas the monomers that make up a complex carbohydrate are all the same. <span>The answer to your question is A.
4. The </span>macromolecules which would have to be discovered in this creature before scientists could suggest that life on Earth and life on Mars have similar methods for storing and transmitting genetic information is the polynucleotide. <span>The answer to your question is D.
5. The </span>type of macromolecule that might be is <span>lipid. </span>The answer to your question is C.
I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.
Answer:
Option-E
Explanation:
The phospholipid bilayer is the layer which forms the outer membrane of the cell.
The phospholipid layer is amphipathic as it contains both the hydrophilic and hydrophobic portions.
The phospholipid is composed of the glycerol attached to phosphate groups which form head or hydrophilic region and the 3 fatty acid tails which form the hydrophobic portion.
The head or hydrophilic portion is arranged in the layer facing the outer external portions and the inside of the cytoplasm as the lipid layer exist in the bilayer.
Thus, Option-E is correct.
In humans, a cleft chin is dominant and no-cleft is recessive. What will the generations look like? Assume that Mendel’s method of crossing two true breeding parents with opposite traits is followed. Check all that apply. <span>The P generation, F1 generation, and F2 generation will have all cleft chins.</span><span>The P generation, F1 generation, and F2 generation will have all no-cleft chins.</span><span>The P generation and F1 generation will have all cleft chins.</span><span>The F1 generation will have all cleft chins.</span><span>The P generation and F2 generation will have all no-cleft chins.</span><span>The P generation and F2 generation will have cleft chins and no-cleft chins.</span><span>The P generation, F1 generation, and F2 generation will have cleft chins and no-cleft chins.</span>
The proper environments for Pepsin are acidic, particularly those with a pH of 1.5 to 2. Optimal operating pH for Trypsins is of about 8. It seems that the highest level of activity for the two if they were in the same environment would have to be midway between their optimum range - about pH 5.
